EP3226473B1 - Dispositif et procédé de gestion de plan d'utilisateur d'une procédure d'optimisation de système de paquets évolué - Google Patents

Dispositif et procédé de gestion de plan d'utilisateur d'une procédure d'optimisation de système de paquets évolué Download PDF

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Publication number
EP3226473B1
EP3226473B1 EP17163949.5A EP17163949A EP3226473B1 EP 3226473 B1 EP3226473 B1 EP 3226473B1 EP 17163949 A EP17163949 A EP 17163949A EP 3226473 B1 EP3226473 B1 EP 3226473B1
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EP
European Patent Office
Prior art keywords
layer
rrc
emm
user plane
cell
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EP17163949.5A
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German (de)
English (en)
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EP3226473A1 (fr
Inventor
Chih-Hsiang Wu
Te-Ming Chen
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HTC Corp
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HTC Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment

Definitions

  • US 9, 237, 594 B2 discloses a method for processing an exceptional case of establishing a default bearer and a device therefor in order to solve a problem in that a user equipment cannot actually receive an IP service by accessing a packet network while failing in establishing the default bearer in a mobile communication system.
  • a method for processing an exceptional case of establishing a default bearer in a mobility management entity includes: receiving a network attachment request from a user equipment; transmitting a network attachment acceptance including an activation request of the default bearer to the user equipment in response to the network attachment request; and cancelling a network attachment procedure when a completion response to the activation request of the default bearer is not received from the user equipment within a predetermined time.
  • the network may also include both the UTRAN/E-UTRAN and a core network, wherein the core network may include network entities such as Mobility Management Entity (MME), Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), Self-Organizing Networks (SON) server and/or Radio Network Controller (RNC), etc.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • PDN Packet Data Network
  • P-GW Packet Data Network Gateway
  • SON Self-Organizing Networks
  • RNC Radio Network Controller
  • a RRC layer of the UE may receive system information from a cell (e.g., a serving cell) of a network. Then, the RRC layer may inform an EPS mobility management (EMM) layer of the UE that a User Plane EPS Optimization functionality (e.g. , a resume/suspend functionality) is allowed in the cell, when the system information indicates that the User Plane EPS Optimization functionality is allowed.
  • EMM EPS mobility management
  • the RRC layer may inform the EMM layer that the User Plane EPS Optimization functionality is not allowed in the cell, when the system information indicates that the User Plane EPS Optimization functionality is not allowed. That is, the RRC layer may inform the EMM layer whether the User Plane EPS Optimization functionality is allowed in the cell, according to the system information received from the network.
  • a RRC connection resume procedure is not performed (e.g., triggered) in a cell that does not support (allow) the User Plane EPS Optimization functionality.
  • the problem of performing the RRC connection is solved according to the process
  • Realization of the process 40 is not limited to the above description. The following examples may be applied to the process 40.
  • the RRC layer may receive a RRCConnectionSetup message from the network, after transmitting the RRCConnectionRequest message.
  • the UE may enter a connected mode, when the RRC layer receives the RRCConnectionSetup message.
  • the RRC layer may transmit a RRCConnectionSetupComplete message with a MME group ID and a MME group to the network.
  • the UE may transmit (receive) data to (from) the network, after the RRC layer transmits the RRCConnectionSetupComplete message to the network.
  • the RRC layer may receive a RRC suspend request message from the network, when the UE is in the connected mode.
  • the RRC layer may suspend a RRC connection and may transmit a suspend indication to the EMM layer, after receiving the RRC suspend request message.
  • the EMM layer may enter an EMM_IDLE with suspended sub-state, when receiving the suspend indication.
  • the RRC layer may receive a RRC connection resume message from the network, after transmitting the RRC connection resume request message to the network.
  • the RRC layer may transmit a RRC resume complete message to the network and may inform the EMM layer that the RRC connection resume is succeeded, after receiving the RRC connection resume message.
  • the EMM layer may enter an EMM_Connected state, after being informed that the RRC connection resume is succeeded.
  • the context may include at least one of a SRB configuration, a DRB configuration, a resume ID, a security configuration (e.g., security key), a C-RNTI, a PCI, and a cell ID, which are received from (or used with) the network (e.g., a base station) transmitting a RRC connection suspend message to the UE.
  • a security configuration e.g., security key
  • the network e.g., a base station
  • the present invention provides a device and a method for handling a RRC connection.
  • the RRC layer informs the EMM layer whether the User Plane EPS Optimization functionality is allowed in the cell, according to the received system information.
  • the RRC layer may transmit the RRC connection resume request message or the RRCConnectionRequest message to the network, according to whether the User Plane EPS Optimization functionality is allowed in the cell. As a result, the problem of performing the RRC connection is solved.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Claims (15)

  1. Dispositif de communication (20) pour gérer une procédure d'Optimisation de Système de Paquets Évolué, EPS, de Plan Usager, comprenant :
    un module de stockage (210), pour mémoriser les instructions suivantes :
    une couche de contrôle de ressources radio, RRC, du dispositif de communication (20) reçoit des informations système à partir d'une cellule d'un réseau (302) ;
    la couche RRC informe une couche de gestion de mobilité EPS, EMM, du dispositif de communication (20) qu'une fonctionnalité d'Optimisation EPS de Plan Usager est autorisée dans la cellule, lorsque les informations système indiquent que la fonctionnalité d'Optimisation EPS de Plan Usager est autorisée (304) ; et
    la couche RRC informe la couche EMM que la fonctionnalité d'Optimisation EPS de Plan Usager n'est pas autorisée dans la cellule, lorsque les informations système indiquent que la fonctionnalité d'Optimisation EPS de Plan Usager n'est pas autorisée (306) ; et
    un circuit de traitement (200), couplé au module de stockage (210), agencé pour exécuter les instructions mémorisées dans le module de stockage (210).
  2. Dispositif de communication selon la revendication 1, dans lequel le module de stockage (210) mémorise en outre les instructions suivantes :
    la couche EMM indique à la couche RRC de réaliser une procédure d'établissement de connexion RRC si la couche EMM lance une procédure pour émettre un message EMM ou des données, après que la couche EMM a été informée par la couche RRC que la fonctionnalité d'Optimisation EPS de Plan Usager n'est pas autorisée dans la cellule.
  3. Dispositif de communication selon la revendication 1, dans lequel le module de stockage (210) mémorise en outre l'instruction suivante :
    la couche EMM indique à la couche RRC de réaliser une procédure de reprise de connexion RRC si la couche EMM lance une procédure pour émettre un message EMM ou des données, après que la couche EMM a été informée par la couche RRC que la fonctionnalité d'Optimisation EPS de Plan Usager est autorisée dans la cellule.
  4. Dispositif de communication selon la revendication 1, dans lequel la couche RRC informe la couche EMM pour indiquer si la fonctionnalité d'Optimisation EPS de Plan Usager est autorisée dans la cellule, lorsqu'une connexion RRC est suspendue et la couche RRC reçoit les informations système ou lorsque la couche EMM demande à la couche RRC de rendre compte d'un état de la fonctionnalité d'Optimisation EPS de Plan Usager.
  5. Dispositif de communication selon la revendication 4, dans lequel la couche RRC réacquière les informations système pour déterminer si la fonctionnalité d'Optimisation EPS de Plan Usager est autorisée dans la cellule, après que la couche EMM a demandé à la couche RRC de rendre compte de l'état de la fonctionnalité d'Optimisation EPS de Plan Usager, avant que la couche RRC émette une indication vers la couche EMM.
  6. Dispositif de communication selon la revendication 1, dans lequel la couche RRC émet une indication vers la couche EMM conformément aux informations système pour indiquer si la fonctionnalité d'Optimisation EPS de Plan Usager est autorisée dans la cellule.
  7. Dispositif de communication selon la revendication 1, dans lequel la couche EMM entre dans un état EMM_IDLE sans indication de suspension, après la réception d'une indication provenant de la couche RRC pour indiquer que la fonctionnalité d'Optimisation EPS de Plan Usager n'est pas autorisée dans la cellule, et la couche EMM entre dans un état EMM_IDLE avec indication de suspension, après la réception d'une indication provenant de la couche RRC pour indiquer que la fonctionnalité d'Optimisation EPS de Plan Usager est autorisée dans la cellule.
  8. Dispositif de communication selon la revendication 1, dans lequel la couche EMM dans un état EMM_IDLE demande à la couche RRC de reprendre une connexion RRC, lorsque la couche EMM lance une procédure de demande de service ou une procédure de demande de service étendu.
  9. Dispositif de communication (20) pour gérer une procédure d'Optimisation de Système de Paquets Évolué, EPS, de Plan Usager, comprenant :
    un module de stockage, pour mémoriser les instructions suivantes :
    une couche de contrôle de ressources radio, RRC, du dispositif de communication (20) reçoit des informations système à partir d'une cellule d'un réseau (402) ;
    une couche de gestion de mobilité EPS, EMM, du dispositif de communication (20) demande à la couche RRC de réaliser une procédure de reprise de connexion RRC, en émettant une demande de reprise vers la couche RRC (404) ;
    la couche RRC émet un message de demande de reprise de connexion RRC vers le réseau, si une connexion RRC est suspendue et les informations système indiquent qu'une fonctionnalité d'Optimisation EPS de Plan Usager est autorisée dans la cellule, lorsque la couche RRC reçoit la demande de reprise à partir de la couche EMM (406) ; et
    la couche RRC émet un message RRCConnectionRequest vers le réseau, si la connexion RRC est suspendue et les informations système indiquent que la fonctionnalité d'Optimisation EPS de Plan Usager n'est pas autorisée dans la cellule, lorsque la couche RRC reçoit la demande de reprise provenant de la couche EMM (408) ; et
    un circuit de traitement (200), couplé au module de stockage (210), agencé pour exécuter les instructions mémorisées dans le module de stockage (210).
  10. Dispositif de communication selon la revendication 9, dans lequel la couche RRC ré-acquière les informations système pour déterminer si la fonctionnalité d'Optimisation EPS de Plan Usager est autorisée dans la cellule, avant d'émettre le message de demande de reprise de connexion RRC ou le message RRCConnectionRequest vers le réseau, après la réception de la demande de reprise provenant de la couche EMM, ou après la réception d'un message de demande de suspension de connexion RRC en provenance du réseau.
  11. Dispositif de communication selon la revendication 9, dans lequel la couche RRC réalise une procédure de sélection/re-sélection de cellule, et la couche RRC émet le message de demande de reprise de connexion RRC vers le réseau, après que le dispositif de communication a commuté vers une cellule de desserte supportant la fonctionnalité d'Optimisation EPS de Plan Usager.
  12. Dispositif de communication selon la revendication 9, dans lequel la couche RRC informe la couche EMM que la fonctionnalité d'Optimisation EPS de Plan Usager n'est pas autorisée dans la cellule, lorsque la couche RRC émet le message RRCConnectionRequest vers le réseau.
  13. Dispositif de communication selon la revendication 9, dans lequel la couche RRC détermine que la fonctionnalité d'Optimisation EPS de Plan Usager n'est pas autorisée dans la cellule, après la réception de la demande de reprise provenant de la couche EMM et aucune connexion RRC n'est suspendue.
  14. Dispositif de communication selon la revendication 9, dans lequel la couche RRC émet le message RRCConnectionRequest vers le réseau après que la couche RRC a informé la couche EMM que la fonctionnalité d'Optimisation EPS de Plan Usager n'est pas autorisée dans la cellule et reçoit une demande de connexion à partir de la couche EMM pour demander à la couche RRC de réaliser une procédure d'établissement de connexion RRC vers le réseau.
  15. Dispositif de communication selon la revendication 9, dans lequel la couche RRC libère un contexte du dispositif de communication lorsque la couche RRC reçoit les informations système indiquant que la fonctionnalité d'Optimisation EPS de Plan Usager n'est pas autorisée dans la cellule, lorsque la couche EMM émet un message de demande de connexion RRC vers la couche RRC, lorsque la couche RRC reçoit un message d'établissement de connexion RRC à partir du réseau, ou lorsque la couche RRC reçoit un message de refus de reprise RRC à partir du réseau.
EP17163949.5A 2016-04-01 2017-03-30 Dispositif et procédé de gestion de plan d'utilisateur d'une procédure d'optimisation de système de paquets évolué Active EP3226473B1 (fr)

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US (1) US10736168B2 (fr)
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Publication number Publication date
CN107277835B (zh) 2020-03-24
EP3226473A1 (fr) 2017-10-04
US10736168B2 (en) 2020-08-04
US20170290084A1 (en) 2017-10-05
CN107277835A (zh) 2017-10-20

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